26,24 → 26,45 |
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// $Id$ |
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import java.lang.reflect.Field; |
import java.util.concurrent.Callable; |
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/** |
* {@see SandboxAccessor} |
* Default implementation of a {@see SandboxAccessor}. |
*/ |
public abstract class SandboxAccessorImpl implements SandboxAccessor { |
public Callable<Sandbox> _getSandbox; |
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protected final Sandbox getSandbox() { |
if (null == _getSandbox) { |
public Object sandboxGetter; |
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public static Sandbox getSandbox(final SandboxAccessor sa) { |
try { |
// Retrieve the field... |
final Field gS = sa.getClass().getField("sandboxGetter"); |
// Evaluate as a callable |
return ((Callable<Sandbox>)gS.get(sa)).call(); |
} |
catch (final NoSuchFieldException e) { |
throw new IllegalStateException(sa.getClass()+" hasn't been correctly initialised", e); |
} |
catch (final Exception e) { |
throw new IllegalStateException("getSandbox produced an exception ("+ |
e.getClass().getSimpleName()+"),"+ |
"for object "+sa+" which is not expected!: " + |
e.getMessage(), e); |
} |
} |
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public final Sandbox getSandbox() { |
if (null == sandboxGetter) { |
throw new IllegalStateException(getClass()+" hasn't been correctly initialised"); |
} |
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try { |
return _getSandbox.call(); |
return ((Callable<Sandbox>)sandboxGetter).call(); |
} |
catch (final Exception e) { |
throw new IllegalStateException("getSandbox produced an exception, which is not expected!"); |
throw new IllegalStateException("sandboxGetter produced an " + |
"exception, which is not expected!"); |
} |
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} |
} |